Oakton Replaceable Electrode for pH WP 2 Pen ph-ec-tds-meters-and-solutions they are great for preparing

they are great for preparing any vegetable

Improves food nutrient density

Your clear choice for HID lamps that provide long-lasting and reliable operation is Xtrasun

OK-35653-01 pH 4

Veg Footprint: 2 ft x 4 ft

Oakton Replaceable Electrode for pH WP 2 Pen ph-ec-tds-meters-and-solutions they are great for preparingThis part number is for a replacement electrode only, for your Oakton pH WP 2 pen (not the actual unit itself). Optimize nutrient strength during growth, flowering, and fruiting. Reliable waterproof, dustproof housing and replaceable electrode provide long life and value, meaning you won't need to invest in or calibrate another Oakton pen once you've become comfortable using yours. Replacement sensors: OK 35624 09 for pHTestr 1 OK 35624 29 for pHTestr